Depreciation Calculator (Straight-Line)

Straight-line depreciation spreads an asset's cost evenly over its useful life for accounting and tax.

Your details

Asset cost$Salvage value$Estimated resale value at the end of its life.Useful life (years)

Annual depreciation

$4,500.00

Monthly: $375.00
Depreciable base: $45,000.00

Depreciable base vs salvage

Depreciable base: $45,000.0090%
Salvage value: $5,000.0010%

Annual depreciation$4,500.00

Formula

Annual depreciation = (asset cost − salvage value) ÷ useful life in years.

Sources & methodology

Straight-line method only; MACRS and accelerated methods are not modelled.

•IRS — depreciation (Pub. 946) — IRS

Last updated: 2026-07-20

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